for ex. a party of 4 runs a bazaar, NPCs run up and demand or ask for something, you make it for them, and it can get harder, more orders start to come in at once. got to get a certain rating or the bazaar people will get angry and kick you out of the shopping area? diner dash type of game.

Mining- how about a mining one and it picks 4 miners classes and 4 fighting job players,mine parts of the cave in, open up to release people and monsters. could be a rock creature boss at the end where the attackers weaken it and miners got to mine it to finish it.

Fishing- group of 4 fish from the river and run and turn in the fish to the fish sellers?